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Taiwan Semiconductor Corporation P6KE43CAH
- Part No.:
- P6KE43CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE43CAH.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,520
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Product details
Overview
P6KE43CAH from Taiwan Semiconductor is a bidirectional 600W transient voltage suppressor (TVS) diode designed for robust overvoltage protection in automotive and industrial power rails. It features a nominal breakdown voltage of 43 V, clamps transients to ≤61.9 V at 10 A peak surge current, and delivers fast response (<5 ns) with low dynamic impedance. It is AEC-Q101 qualified and housed in a DO-204AC (DO-15) package for use in 12 V/24 V vehicle subsystems.
For engineers reviewing the P6KE43CAH datasheet, P6KE43CAH pinout, P6KE43CAH application, or P6KE43CAH equivalent, key selection criteria include its bidirectional clamping behavior, 61.9 V maximum clamping voltage at 10 A, AEC-Q101 qualification status, DO-15 mechanical compatibility, and suitability for EFT/ESD protection in automotive body control modules, lighting drivers, and sensor interfaces.
Technical Context
The P6KE43CAH operates as a silicon avalanche diode configured in a symmetrical bipolar junction, enabling identical clamping performance in both forward and reverse polarity transients. Its 43 V nominal breakdown voltage is defined at 1 mA test current, with a guaranteed VBR range of 38.7–47.3 V and a temperature coefficient of 0.101 %/°C.
It sustains non-repetitive 10/1000 µs surge pulses up to 600 W, with a maximum clamping voltage of 61.9 V at 10 A peak current (IPP). Standoff voltage is 34.8 V, reverse leakage is ≤1 µA at that voltage, and junction temperature rating extends from –55 °C to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 38.7 V / 47.3 V - Guaranteed avalanche conduction onset range at 1 mA, ensuring predictable turn-on across temperature and unit variation |
| VWM | 34.8 V - Maximum continuous working voltage before significant leakage; sets safe operating margin below VBR |
| VC @ IPP = 10 A | 61.9 V - Peak clamped voltage during 10/1000 µs surge; defines worst-case protected-circuit overvoltage stress |
| PPK | 600 W - Non-repetitive surge power handling per standard 10/1000 µs waveform; determines single-event survivability |
| IR @ VWM | ≤1 µA - Reverse leakage at standoff voltage; ensures minimal quiescent power loss and signal integrity in high-impedance circuits |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments without derating |
| Package | DO-204AC (DO-15) - Industry-standard axial-leaded package with 0.400 g mass, UL 94V-0 molding, and tin-plated leads |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case with cathode band marking for unidirectional variants; P6KE43CAH is bidirectional and marked without polarity band. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction terminals | No functional polarity - either lead may connect to line or ground; identical clamping in both directions |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC specification |
| 600 W 10/1000 µs surge rating | Withstands high-energy transients common in load-dump and inductive switching events in 12 V/24 V systems |
| Clamping voltage ≤61.9 V at 10 A | Provides tight overvoltage limiting to protect downstream 3.3 V/5 V/12 V ICs without overdesigning upstream filtering |
| Response time <5 ns (bidirectional) | Engages before most microsecond-scale transients fully develop, minimizing voltage overshoot on protected nodes |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and environmental requirements for automotive and industrial end equipment |
Applications
| Automotive Body Control Module (BCM) | LED Headlamp Driver Protection |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power rails from load-dump spikes and ISO 7637-2 pulse 5a/b. IC Role / Device Role / Timing Role: Bidirectional TVS placed between VBAT and ground to clamp positive/negative transients before they reach LDOs and logic ICs. Use Value: Enables direct connection to 12 V battery rail without additional series impedance, leveraging 61.9 V clamping to keep protected ICs within absolute maximum ratings. | Use Scenario: Shields constant-current LED driver ICs and MOSFET gate drivers from inductive kickback during PWM dimming and thermal shutdown events. IC Role / Device Role / Timing Role: Placed across driver output or supply input to absorb flyback energy from LED string inductance. Use Value: Prevents latch-up or gate oxide damage in driver ICs by limiting transient voltage to ≤61.9 V while maintaining low leakage (<1 µA) during normal operation. |
| Industrial PLC Digital Input Module | Automotive HVAC Blower Motor Control |
Use Scenario: Guards 24 V DC digital input circuitry against EFT bursts (IEC 61000-4-4) and accidental 48 V misconnection. IC Role / Device Role / Timing Role: Connected between field input terminal and optocoupler/signal conditioner input to shunt surge energy to ground. Use Value: Ensures immunity to 1 kV/5 kHz EFT without degrading input threshold accuracy, thanks to stable 34.8 V standoff and sub-µA leakage. | Use Scenario: Suppresses commutation spikes generated by brushed DC blower motor brushes during speed regulation and direction reversal. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge power stage to clamp inductive energy during MOSFET turn-off. Use Value: Extends MOSFET lifetime by limiting drain-source voltage overshoot to ≤61.9 V, reducing avalanche stress and thermal runaway risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | 400 W rating, SMC (DO-214AB) package, 64.5 V clamping at 9.3 A | Lower surge capacity; surface-mount only; requires PCB rework for through-hole replacement | Select when board space is constrained and 400 W suffices; not drop-in for DO-15 footprint |
| 1.5KE43CA | 1500 W rating, DO-201AD package, 69.4 V clamping at 21.7 A | Higher power handling but larger DO-201AD body; slower thermal response due to higher junction-to-case resistance | Choose for extreme surge environments where 600 W is marginal; verify mechanical fit and layout clearance |
Compared with SMBJ43CA and 1.5KE43CA, the P6KE43CAH offers balanced 600 W surge capability in the widely adopted DO-15 through-hole package, AEC-Q101 qualification for automotive use, and tighter 61.9 V clamping-making it optimal for cost-sensitive, reliability-critical 12 V/24 V subsystems where footprint and qualification align.
Availability
P6KE43CAH is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and LED lighting driver designs requiring stable component supply and long-term lifecycle support.
Supply support for P6KE43CAH includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The P6KE Series belongs to TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient suppression in harsh automotive electrical environments-including load dump, jump start, and EFT exposure-while maintaining tight parametric consistency and long-term reliability.
FAQ
What does the "CA" suffix indicate in P6KE43CAH?
The "CA" suffix in P6KE43CAH denotes a bidirectional configuration, meaning the device provides symmetrical clamping for both positive and negative transients without polarity sensitivity. This differs from "A"-suffixed unidirectional parts (e.g., P6KE43AH), which require correct anode/cathode orientation. The "H" suffix confirms AEC-Q101 qualification, verified per TSC's P2203 documentation.
Is P6KE43CAH compatible with lead-free reflow soldering processes?
No-P6KE43CAH uses axial leads with pure tin plating and is intended for wave soldering or hand-soldering per J-STD-002. It is not rated for lead-free reflow (e.g., SAC305 at 260 °C peak), as its DO-204AC package lacks thermal mass tolerance for such profiles. For reflow-compatible alternatives, consider SMD packages like SMBJ43CA.
What is the maximum allowable ambient temperature for continuous operation of P6KE43CAH?
P6KE43CAH supports continuous operation up to +75 °C ambient when mounted on 5 × 5 mm copper pads per terminal, delivering 5 W steady-state power dissipation. Above 75 °C, derating applies per Fig.2 in the datasheet; full 600 W surge capability remains valid only at TA = 25 °C, decreasing linearly to ~400 W at +100 °C ambient.
How does P6KE43CAH perform under ISO 7637-2 Pulse 5a (load dump)?
P6KE43CAH clamps ISO 7637-2 Pulse 5a (12 V system, 100 V/400 ms) effectively due to its 600 W 10/1000 µs rating and 61.9 V VC. When used with appropriate series impedance (e.g., 1 Ω line resistor), it limits peak voltage seen by downstream ICs to <65 V, satisfying automotive OEM requirements for 12 V network protection without additional active circuitry.
Can P6KE43CAH be used in parallel to increase surge current handling?
No-P6KE43CAH should not be paralleled without individual current-sharing resistors. Minor VBR tolerances (38.7–47.3 V) cause uneven current division during surges, risking thermal runaway in the lower-breakdown unit. For higher surge capacity, select a single higher-rated device like 1.5KE43CA instead of paralleling P6KE43CAH units.
P6KE43CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE43CAH FAQ
1.How can I place an order for P6KE43CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE43CAH on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P6KE43CAH reliable?
The price and inventory of P6KE43CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE43CAH is usually 5 days.
3.What payment methods are accepted for P6KE43CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE43CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE43CAH?
P6KE43CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE43CAH order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P6KE43CAH?
For technical support, including P6KE43CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE43CAH requirements.
6.How does Aetrix verify that P6KE43CAH is sourced from the original manufacturer or authorized distributors?
All P6KE43CAH products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P6KE43CAH meets industry standards.
7.What is the process for return or replacement of P6KE43CAH?
All P6KE43CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE43CAH, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P6KE43CAH part is unused and in its original packaging.
Return procedure for P6KE43CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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